diff --git a/build.env b/build.env
index 7932f74a6..6628aaf4b 100644
--- a/build.env
+++ b/build.env
@@ -48,7 +48,7 @@ ROOK_VERSION=v1.9.8
 ROOK_CEPH_CLUSTER_IMAGE=quay.io/ceph/ceph:v17
 
 # CSI sidecar version
-CSI_ATTACHER_VERSION=v3.5.0
+CSI_ATTACHER_VERSION=v4.0.0
 CSI_SNAPSHOTTER_VERSION=v6.0.1
 CSI_RESIZER_VERSION=v1.6.0
 CSI_PROVISIONER_VERSION=v3.2.1
diff --git a/charts/ceph-csi-rbd/README.md b/charts/ceph-csi-rbd/README.md
index 48574067e..35b4c3291 100644
--- a/charts/ceph-csi-rbd/README.md
+++ b/charts/ceph-csi-rbd/README.md
@@ -121,7 +121,7 @@ charts and their default values.
 | `provisioner.provisioner.image.tag`            | Specifies image tag                                                                                                                                  | `v3.2.1`                                           |
 | `provisioner.provisioner.image.pullPolicy`     | Specifies pull policy                                                                                                                                | `IfNotPresent`                                     |
 | `provisioner.attacher.image.repository`        | Specifies the csi-attacher image repository URL                                                                                                      | `registry.k8s.io/sig-storage/csi-attacher`              |
-| `provisioner.attacher.image.tag`               | Specifies image tag                                                                                                                                  | `v3.5.0`                                           |
+| `provisioner.attacher.image.tag`               | Specifies image tag                                                                                                                                  | `v4.0.0`                                           |
 | `provisioner.attacher.image.pullPolicy`        | Specifies pull policy                                                                                                                                | `IfNotPresent`                                     |
 | `provisioner.attacher.name`                    | Specifies the name of csi-attacher sidecar                                                                                                           | `attacher`                                         |
 | `provisioner.attacher.enabled`                 | Specifies whether attacher sidecar is enabled                                                                                                        | `true`                                             |
diff --git a/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml b/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
index 9e3b30f3e..f425b174d 100644
--- a/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
+++ b/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
@@ -124,6 +124,7 @@ spec:
             - "--csi-address=$(ADDRESS)"
             - "--leader-election=true"
             - "--retry-interval-start=500ms"
+            - "--default-fstype=ext4"
           env:
             - name: ADDRESS
               value: "unix:///csi/{{ .Values.provisionerSocketFile }}"
diff --git a/charts/ceph-csi-rbd/values.yaml b/charts/ceph-csi-rbd/values.yaml
index d05dcd414..04d5c628a 100644
--- a/charts/ceph-csi-rbd/values.yaml
+++ b/charts/ceph-csi-rbd/values.yaml
@@ -216,7 +216,7 @@ provisioner:
     enabled: true
     image:
       repository: registry.k8s.io/sig-storage/csi-attacher
-      tag: v3.5.0
+      tag: v4.0.0
       pullPolicy: IfNotPresent
     resources: {}
 
diff --git a/deploy/rbd/kubernetes/csi-rbdplugin-provisioner.yaml b/deploy/rbd/kubernetes/csi-rbdplugin-provisioner.yaml
index 600faada8..9e88a67a0 100644
--- a/deploy/rbd/kubernetes/csi-rbdplugin-provisioner.yaml
+++ b/deploy/rbd/kubernetes/csi-rbdplugin-provisioner.yaml
@@ -84,12 +84,13 @@ spec:
             - name: socket-dir
               mountPath: /csi
         - name: csi-attacher
-          image: registry.k8s.io/sig-storage/csi-attacher:v3.5.0
+          image: registry.k8s.io/sig-storage/csi-attacher:v4.0.0
           args:
             - "--v=1"
             - "--csi-address=$(ADDRESS)"
             - "--leader-election=true"
             - "--retry-interval-start=500ms"
+            - "--default-fstype=ext4"
           env:
             - name: ADDRESS
               value: /csi/csi-provisioner.sock